Leveling-rod



2 Sheets-Sheet 1. H. P. BEAN.

LBVELING R Model.)

Patented Jan. 27, 1885.

N PETERS. Pholo Lllhagraphon Washington. D. c.

(No Model.) 2 Sheets-Sheet 2. 1-1. I. BEAN.

[nun/far UNTTED STATES:

PATENT Unmet.

HENRY FRANCIS BEAN, or JACKSON, MICHIGAN.

LEVELlNG-ROD.

SPECIFICATION forming part of Letters Patent No. 311,221, dated January27, 1885 Application filed July 9, 1884. (No model.)

To a whom it may concern:

Be it known that I, HENRY-F. BEAN, of Jackson, in the county of Jacksonand State of Michigan, have invented new and useful Improvements inLeveling-Rods; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawings, which form a part of this specification.

This invention relates to certain new and useful improvements in theconstruction of leveling-rods for leveling and setting slopestakes, andis designed as animprovementupon Letters Patent granted to me December19, 1882, No. 269,254, and the invention consists in the peculiarconstruction, combifiatiomand operation of the parts, all as more fullyhereinafter set forth.

Figure l is a side elevation of myimproved rod. Fig. 2is an elevation ofthe reverse side. Fig. 8 is a cross-section on the linescx, Fig. 1. Fig.4. is a cross-section 011 the liner y, Fig. 1. Fig. 5 is a diagramcross-section of railroad earth-work.

In the accompanying drawings, which form a part of this specification, Arepresents an ordinary square leveling-rod, such as is usually employedin connection with a target.

B represents my improved rod,which is ad- 0 j ustably secured upon therod A by suitable slides or clips, a. Upon one side of this rod arearranged the target-numbers, Fig. 1, dividing each foot of the rod intotenths, reading downward, these being the consecutive nine numeralsdenoting nine-tenths,while that portion of the rod which should bear thenumeral 10 is cut away, for the purpose hereinafter de scribed. Thereverse side of the rod is similarly divided into tenths, but arrangedtoread 'iipward. This rod B is longitudinally recessed and provided with agroove, B to receivethe tongue on the sliding rod or bar 0. Each foot ofthe two opposite sides or faces of this rod is divided into eleventhsand arranged to read downwardly and upwardly, corresponding to the sideof the rod B, the readings being disclosed through the openings btherein. It will be noticed that the central portion of the rod 0 ismuch thinner than the recess in the rod B, and it is provided on oneedge with a tongue, 0, which enters the groove B of the recess B, theother side being enlarged, as at c, to fill the space between the sidesforming the recess. This arrangement prevents any abrasion of the scaleon the sides of the rod G,as clearly shown in Fig. 3. It will be furthernoticed that the clip D, which binds the rods Band Otogether, and servesas a means for moving the rod 0, would in its movement mar and rub thescale affiXed to the sides of the bar B if it were not for the lateralextensions 1), which prevent all contact between the clip and thesurface of the scale. The sliding rod is provided with a clamp, D, bymeans of which it may be operated and secured at any desired point.

My improved rod is designed to take the place of the endless tape Bdescribed in the hereinbeforementioned Letters Patent, and is to be usedin connection with the out-tape therein described. For illustration,1etFig. 5 represent a diagram cross-section of railroad earth-work. Havinggiven the width of the roadway, in cuts, say, twenty feet and onembankments fourteen feet, ratio of side slopes one and one-half toone,the depth of the center cutting at G H is known; but the depth ofthe cut at A B,depth of fill at Eand F, gradepoint at D, and the cuts HJ and H. Kremain to be ascertained. Set the level at any point where thepoints A, B, G, D, E, and K can be seen, the rods having been previouslyplaced in position and theinstrument leveled. After the level has beenset up, set the rod A upon the center peg at thepointOaud raise or lowerthe rod B until one of the apertures of the rod B shall be in the centerof the line of sight of the instrument. Then slide the rod 0 until theunitfigure of the feet of the center cut is disclosed through suchaperture, and for the tenths, if any, raise or lower the rod B until theline of sight shall cut the figure representing the tenths required. Tofind the depth of cut at A J the tapeman will hold the out-tape over thecenter peg, G, as described atlengthin the patent hereinbefore referredto, the rodman at the same time holding the rod at or near the point A.If the readings upon the rod and the out-tape are alike,the point Aisfound, the engineer reading at once upon the down side of the rod B theamount of cut to be made at that point. If, however, it be desired tofind the fill at F, the same operation should be carried out, exceptthat the up side of the rod B should be read, the base zero coming belowthe line of sight of the instrument. The reading above such base zero onthe rod B would indicate the amount of fill to be made at that point.

Pivotally secured to the side clips are the bars P, which may beemployed to assist the stakeman in setting his side stakes atrightanglesto the line of the roadbed.

WVhat I claim as my invention is 1. The rod B, longitudinally recessedand having lateral apertures at fixed intervals running at rightanglesto the recess, in combination with a rod, 0, sliding wholly within saidrecess and having its sides exposed through the aforesaid apertures, asand for the purposes set forth.

2. The rod B, longitudinally recessed ant laterally apertured, incombination with the rod 0, sliding wholly within the said recess, andthe clip D, performing the double func tion of binding the two rodstogether and adjusting the rod O within the rod 13, substantially as andfor the purposes described.

3. In combination, therod B, provided with the lateral extensions 1),sliding rod O, and the clip D, all combined, arranged, and operating asand for the purposes set forth.

4. The rod B, longitudinally recessed, in combination with the rod 0,sliding Wholly within the said recess and having its central portion ofless width than said recess, substantially as and for the purposespecified.

5. The combination, with the rods A and B, adjustably connectedtogether, of the bars P, pivotally connected with one of said rods andvertically adjustable thereon, substantially as and for the purpose setforth.

(3. The rod A, in combination with the rod B, clips c, and the bars P,pivotally attached to said clips, the parts being combined and arrangedsubstantially as and for the purposes specified.

HENRY FRANCIS BEAN.

\Vitnesses:

H. S. SPRAGUE, E. SoULLY.

